a. Not contracted: those that end in υ or ι, as λύ_-ωloose, παιδεύ-ωeducate, χρί_-ωanoint. Such verbs retain the final vowel of the stem unchanged in all their forms.

b. Contracted: those that end in α, ε, ο, as τι_μῶhonour from τι_μά-ω, ποιῶmake from ποιέ-ω, δηλῶmanifest from δηλό-ω.

2. Consonant verbs, as:

Liquid or nasal verbs: δέρ-ωflay, μέν-ωremain.

Verbs ending in a stop (or mute), as ἄγ-ωlead, πείθ-ωpersuade.

N.—Verbs ending in a stop consonant are called labial, dental, or palatal verbs. Consonant verbs do not retain the final consonant of the stem unchanged in all their forms. The final consonant may be assimilated to a following consonant, or may form with it a double consonant.